Pipe-coupling.



G. E. KELLY & G. r. ROYER.

PIPE COUPLING.

APPLIOATION FILED OCT. a, 1906.

I 93?,533. Patented Oct. 19,1909.

cnonen n. KELLY PIPE-COUPLING.

Specification of Letters Patent.

racemes Get. as, ices.

- Application filed October 3, 1906. Serial No. 337,259.

To all whom it may concern:

c it known that we, GEORGE E. KELLY and GEORGE F. Roynu, citizens of the United tales, and residents of l'VilkcsBarre, Luzernc county, Pennsylvania, have invented certain new and useful Improvements in Pipe-Coupliings, of which the following is a specification.

This invention relates to a universal coupling for pipes, and more especially toa joint In assembling the parts the coupling ring 4 is first slipped over the coupling member A, after WhlCli the packing material 10, the rigid ring 8, and the flexible ring 9 aresuccessively placed in position. The hell 2 is then screwed into the ring 4 until the parts are securely clamped. It will be suitable for connecting steam or air train.

pipes for heating and braking purposes on railway trains. The invention will be described in connection with the accompanying drawing illustrating in central section a universal pipe joint embodying the invention.

Referring to the drawing, A indicates the ball member, and B the socket member. The ball member A is tubular and provided with a head. having a'spherical outer surface 1.

The socket member l3 comprises a flaring or bell portion 2, which may, if desircd,be integral with the tubular portion 3, but as shown these parts are connected by a screw joint. A coupling ring 4 unites the bell 2 The ring 4 has an adjustable threaded connection 5 with the bell 2 at one end, and its opposite end has an inwardly turned flange 6, the diameter of which is somewhat less than the diameter of the spherical head or ball 1.

On the inner surface of the ring dis a shoulder 7, which surface has an abutment for a packing ring 8. The inner edge of the ring 8 conforms to the ball 1, but is of slightly less diameter and is thus adapted to take the thrust of the ball when the memers A, {are pushed toward each other. The packing ring 8 is preferably of metal or other strong hard material,

Between the rigid packing ring 8 and the hell 2 isa flexible packing ring 9, the outer edge of which is clamped between the bell and the rigid packing ring; edge extends under the bell and'lies close to the spherical surface 1. The annular space between the rigid packing ring 8 and the flange 6 is filled with a packing l0, whichinay contain 011 or graphite or both for a lubricant.

while the inner suitable lubricating I properly clamped in position, the turning by In operation the rigid ring 8, which is of less diameter than the spherical. head 1, is adapted to take any inward thrust of the section A. Out-Ward thrust. of the section A is sustained by the flange 6 and the interposed packing; 1.0, which packing lubricatcs the joint. The flexible packing ring 9 fits closely to the ball joint and its 'outer surface is exposed to the pressure within the tube, which pressure tends to press the packing-1' against the ball and effectually prevent leakage. The rigid packing ring 8 and the lubricating packing 10 also assist in preventing leakage, so that the joint is prevented in several ways from leaking, and it is especially secure in this respect. It is also simple and cheap in construction and very effective for the purposes for which it is intended.

Having thus described our invention, what is claimed and desired to be secured by Let ters Patent is,-

1. In a flexible pipe coupling, the combination with a-socket member, and a ball member, of a coupling ring detachably connectcd with the socket member and bearing on the ball member, a rigid packing ring bearing against a shoulder on the inner surface of the coupling ring and adapted to receive the thrust of the ball member in the direction of the socket member, and'a flexile packing; ring secured between said rigid ring and the adjacent end of the socket member, of a rigid packing ring arranged in but formed separate from the socket mem- In testimony whereof we affix our signaber and adapted to bear upon the ball to tures 1H presence of two witnesses. receive the inward thrust thereof, a flexible GEORGE E. KELLY.

packing ring secured on the inner side of GEORGE RROYER. said rigid pecking ring, and lubricating Witnesses: packing secured upon the outer side of said JoHN J. ODONNELL,

rigid mng. EDWARD N. NoLL. 

